<!DOCTYPE html>
<html>
    <head>
        <title>Django企业开发实战-Bootstrap demo</title>
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
        <link href="https://cdn.botcss.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" media="screen">
    </head>
    <body>
        <div class="container" style="border: 1px solid red;">
            <h1>Helllo,world!</h1>
        </div>
        <div class="container" style="border: 1px solid red;">
            <div class="row">
                <div class="col-9" style="border: 1px solid blue;">
                    <div style="height: 500px;">内容区</div>
                </div>
                <div class="col-3" style="border: 1px solid blue;">
                    <div style="height: 500px;">侧边栏</div>
                </div>
            </div>
        </div>
        <footer class="container" style="border: 1px solid red:">
            底部foter区域
        </footer>
    </bodey>
</html>